Line data Source code
1 : /*
2 : * WPA Supplicant / main() function for UNIX like OSes and MinGW
3 : * Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "includes.h"
10 : #ifdef __linux__
11 : #include <fcntl.h>
12 : #endif /* __linux__ */
13 :
14 : #include "common.h"
15 : #include "fst/fst.h"
16 : #include "wpa_supplicant_i.h"
17 : #include "driver_i.h"
18 : #include "p2p_supplicant.h"
19 :
20 :
21 25 : static void usage(void)
22 : {
23 : int i;
24 25 : printf("%s\n\n%s\n"
25 : "usage:\n"
26 : " wpa_supplicant [-BddhKLqq"
27 : #ifdef CONFIG_DEBUG_SYSLOG
28 : "s"
29 : #endif /* CONFIG_DEBUG_SYSLOG */
30 : "t"
31 : #ifdef CONFIG_DBUS
32 : "u"
33 : #endif /* CONFIG_DBUS */
34 : "vW] [-P<pid file>] "
35 : "[-g<global ctrl>] \\\n"
36 : " [-G<group>] \\\n"
37 : " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
38 : "[-p<driver_param>] \\\n"
39 : " [-b<br_ifname>] [-e<entropy file>]"
40 : #ifdef CONFIG_DEBUG_FILE
41 : " [-f<debug file>]"
42 : #endif /* CONFIG_DEBUG_FILE */
43 : " \\\n"
44 : " [-o<override driver>] [-O<override ctrl>] \\\n"
45 : " [-N -i<ifname> -c<conf> [-C<ctrl>] "
46 : "[-D<driver>] \\\n"
47 : #ifdef CONFIG_P2P
48 : " [-m<P2P Device config file>] \\\n"
49 : #endif /* CONFIG_P2P */
50 : " [-p<driver_param>] [-b<br_ifname>] [-I<config file>] "
51 : "...]\n"
52 : "\n"
53 : "drivers:\n",
54 : wpa_supplicant_version, wpa_supplicant_license);
55 :
56 100 : for (i = 0; wpa_drivers[i]; i++) {
57 150 : printf(" %s = %s\n",
58 75 : wpa_drivers[i]->name,
59 75 : wpa_drivers[i]->desc);
60 : }
61 :
62 : #ifndef CONFIG_NO_STDOUT_DEBUG
63 25 : printf("options:\n"
64 : " -b = optional bridge interface name\n"
65 : " -B = run daemon in the background\n"
66 : " -c = Configuration file\n"
67 : " -C = ctrl_interface parameter (only used if -c is not)\n"
68 : " -i = interface name\n"
69 : " -I = additional configuration file\n"
70 : " -d = increase debugging verbosity (-dd even more)\n"
71 : " -D = driver name (can be multiple drivers: nl80211,wext)\n"
72 : " -e = entropy file\n");
73 : #ifdef CONFIG_DEBUG_FILE
74 25 : printf(" -f = log output to debug file instead of stdout\n");
75 : #endif /* CONFIG_DEBUG_FILE */
76 25 : printf(" -g = global ctrl_interface\n"
77 : " -G = global ctrl_interface group\n"
78 : " -K = include keys (passwords, etc.) in debug output\n");
79 : #ifdef CONFIG_DEBUG_SYSLOG
80 : printf(" -s = log output to syslog instead of stdout\n");
81 : #endif /* CONFIG_DEBUG_SYSLOG */
82 : #ifdef CONFIG_DEBUG_LINUX_TRACING
83 25 : printf(" -T = record to Linux tracing in addition to logging\n");
84 25 : printf(" (records all messages regardless of debug verbosity)\n");
85 : #endif /* CONFIG_DEBUG_LINUX_TRACING */
86 25 : printf(" -t = include timestamp in debug messages\n"
87 : " -h = show this help text\n"
88 : " -L = show license (BSD)\n"
89 : " -o = override driver parameter for new interfaces\n"
90 : " -O = override ctrl_interface parameter for new interfaces\n"
91 : " -p = driver parameters\n"
92 : " -P = PID file\n"
93 : " -q = decrease debugging verbosity (-qq even less)\n");
94 : #ifdef CONFIG_DBUS
95 25 : printf(" -u = enable DBus control interface\n");
96 : #endif /* CONFIG_DBUS */
97 25 : printf(" -v = show version\n"
98 : " -W = wait for a control interface monitor before starting\n"
99 : #ifdef CONFIG_P2P
100 : " -m = Configuration file for the P2P Device interface\n"
101 : #endif /* CONFIG_P2P */
102 : " -N = start describing new interface\n");
103 :
104 50 : printf("example:\n"
105 : " wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
106 50 : wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
107 : #endif /* CONFIG_NO_STDOUT_DEBUG */
108 25 : }
109 :
110 :
111 6 : static void license(void)
112 : {
113 : #ifndef CONFIG_NO_STDOUT_DEBUG
114 6 : printf("%s\n\n%s%s%s%s%s\n",
115 : wpa_supplicant_version,
116 : wpa_supplicant_full_license1,
117 : wpa_supplicant_full_license2,
118 : wpa_supplicant_full_license3,
119 : wpa_supplicant_full_license4,
120 : wpa_supplicant_full_license5);
121 : #endif /* CONFIG_NO_STDOUT_DEBUG */
122 6 : }
123 :
124 :
125 146 : static void wpa_supplicant_fd_workaround(int start)
126 : {
127 : #ifdef __linux__
128 : static int fd[3] = { -1, -1, -1 };
129 : int i;
130 : /* When started from pcmcia-cs scripts, wpa_supplicant might start with
131 : * fd 0, 1, and 2 closed. This will cause some issues because many
132 : * places in wpa_supplicant are still printing out to stdout. As a
133 : * workaround, make sure that fd's 0, 1, and 2 are not used for other
134 : * sockets. */
135 146 : if (start) {
136 73 : for (i = 0; i < 3; i++) {
137 73 : fd[i] = open("/dev/null", O_RDWR);
138 73 : if (fd[i] > 2) {
139 73 : close(fd[i]);
140 73 : fd[i] = -1;
141 73 : break;
142 : }
143 : }
144 : } else {
145 292 : for (i = 0; i < 3; i++) {
146 219 : if (fd[i] >= 0) {
147 0 : close(fd[i]);
148 0 : fd[i] = -1;
149 : }
150 : }
151 : }
152 : #endif /* __linux__ */
153 146 : }
154 :
155 :
156 73 : int main(int argc, char *argv[])
157 : {
158 : int c, i;
159 : struct wpa_interface *ifaces, *iface;
160 73 : int iface_count, exitcode = -1;
161 : struct wpa_params params;
162 : struct wpa_global *global;
163 :
164 73 : if (os_program_init())
165 0 : return -1;
166 :
167 73 : os_memset(¶ms, 0, sizeof(params));
168 73 : params.wpa_debug_level = MSG_INFO;
169 :
170 73 : iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
171 73 : if (ifaces == NULL)
172 0 : return -1;
173 73 : iface_count = 1;
174 :
175 73 : wpa_supplicant_fd_workaround(1);
176 :
177 : for (;;) {
178 556 : c = getopt(argc, argv,
179 : "b:Bc:C:D:de:f:g:G:hi:I:KLm:No:O:p:P:qsTtuvW");
180 556 : if (c < 0)
181 49 : break;
182 507 : switch (c) {
183 : case 'b':
184 6 : iface->bridge_ifname = optarg;
185 6 : break;
186 : case 'B':
187 18 : params.daemonize++;
188 18 : break;
189 : case 'c':
190 41 : iface->confname = optarg;
191 41 : break;
192 : case 'C':
193 6 : iface->ctrl_interface = optarg;
194 6 : break;
195 : case 'D':
196 41 : iface->driver = optarg;
197 41 : break;
198 : case 'd':
199 : #ifdef CONFIG_NO_STDOUT_DEBUG
200 : printf("Debugging disabled with "
201 : "CONFIG_NO_STDOUT_DEBUG=y build time "
202 : "option.\n");
203 : goto out;
204 : #else /* CONFIG_NO_STDOUT_DEBUG */
205 84 : params.wpa_debug_level--;
206 84 : break;
207 : #endif /* CONFIG_NO_STDOUT_DEBUG */
208 : case 'e':
209 6 : params.entropy_file = optarg;
210 6 : break;
211 : #ifdef CONFIG_DEBUG_FILE
212 : case 'f':
213 36 : params.wpa_debug_file_path = optarg;
214 36 : break;
215 : #endif /* CONFIG_DEBUG_FILE */
216 : case 'g':
217 35 : params.ctrl_interface = optarg;
218 35 : break;
219 : case 'G':
220 24 : params.ctrl_interface_group = optarg;
221 24 : break;
222 : case 'h':
223 6 : usage();
224 6 : exitcode = 0;
225 6 : goto out;
226 : case 'i':
227 41 : iface->ifname = optarg;
228 41 : break;
229 : case 'I':
230 6 : iface->confanother = optarg;
231 6 : break;
232 : case 'K':
233 24 : params.wpa_debug_show_keys++;
234 24 : break;
235 : case 'L':
236 6 : license();
237 6 : exitcode = 0;
238 6 : goto out;
239 : #ifdef CONFIG_P2P
240 : case 'm':
241 6 : params.conf_p2p_dev = optarg;
242 6 : break;
243 : #endif /* CONFIG_P2P */
244 : case 'o':
245 6 : params.override_driver = optarg;
246 6 : break;
247 : case 'O':
248 6 : params.override_ctrl_interface = optarg;
249 6 : break;
250 : case 'p':
251 6 : iface->driver_param = optarg;
252 6 : break;
253 : case 'P':
254 18 : os_free(params.pid_file);
255 18 : params.pid_file = os_rel2abs_path(optarg);
256 18 : break;
257 : case 'q':
258 6 : params.wpa_debug_level++;
259 6 : break;
260 : #ifdef CONFIG_DEBUG_SYSLOG
261 : case 's':
262 : params.wpa_debug_syslog++;
263 : break;
264 : #endif /* CONFIG_DEBUG_SYSLOG */
265 : #ifdef CONFIG_DEBUG_LINUX_TRACING
266 : case 'T':
267 7 : params.wpa_debug_tracing++;
268 7 : break;
269 : #endif /* CONFIG_DEBUG_LINUX_TRACING */
270 : case 't':
271 24 : params.wpa_debug_timestamp++;
272 24 : break;
273 : #ifdef CONFIG_DBUS
274 : case 'u':
275 12 : params.dbus_ctrl_interface = 1;
276 12 : break;
277 : #endif /* CONFIG_DBUS */
278 : case 'v':
279 6 : printf("%s\n", wpa_supplicant_version);
280 6 : exitcode = 0;
281 6 : goto out;
282 : case 'W':
283 7 : params.wait_for_monitor++;
284 7 : break;
285 : case 'N':
286 17 : iface_count++;
287 17 : iface = os_realloc_array(ifaces, iface_count,
288 : sizeof(struct wpa_interface));
289 17 : if (iface == NULL)
290 0 : goto out;
291 17 : ifaces = iface;
292 17 : iface = &ifaces[iface_count - 1];
293 17 : os_memset(iface, 0, sizeof(*iface));
294 17 : break;
295 : default:
296 6 : usage();
297 6 : exitcode = 0;
298 6 : goto out;
299 : }
300 483 : }
301 :
302 49 : exitcode = 0;
303 49 : global = wpa_supplicant_init(¶ms);
304 49 : if (global == NULL) {
305 0 : wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
306 0 : exitcode = -1;
307 0 : goto out;
308 : } else {
309 49 : wpa_printf(MSG_INFO, "Successfully initialized "
310 : "wpa_supplicant");
311 : }
312 :
313 49 : if (fst_global_init()) {
314 0 : wpa_printf(MSG_ERROR, "Failed to initialize FST");
315 0 : exitcode = -1;
316 0 : goto out;
317 : }
318 :
319 : #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
320 49 : if (!fst_global_add_ctrl(fst_ctrl_cli))
321 0 : wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
322 : #endif
323 :
324 81 : for (i = 0; exitcode == 0 && i < iface_count; i++) {
325 : struct wpa_supplicant *wpa_s;
326 :
327 79 : if ((ifaces[i].confname == NULL &&
328 60 : ifaces[i].ctrl_interface == NULL) ||
329 41 : ifaces[i].ifname == NULL) {
330 32 : if (iface_count == 1 && (params.ctrl_interface ||
331 13 : params.dbus_ctrl_interface))
332 : break;
333 13 : usage();
334 13 : exitcode = -1;
335 13 : break;
336 : }
337 41 : wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
338 41 : if (wpa_s == NULL) {
339 9 : exitcode = -1;
340 9 : break;
341 : }
342 : }
343 :
344 49 : if (exitcode == 0)
345 27 : exitcode = wpa_supplicant_run(global);
346 :
347 49 : wpa_supplicant_deinit(global);
348 :
349 49 : fst_global_deinit();
350 :
351 : out:
352 73 : wpa_supplicant_fd_workaround(0);
353 73 : os_free(ifaces);
354 73 : os_free(params.pid_file);
355 :
356 73 : os_program_deinit();
357 :
358 73 : return exitcode;
359 : }
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